refactor: relocate options classes to dedicated Options folders

Move configuration options from Core/DataAccess/DataSync/ExcelIO to
dedicated Options folders within each project for better organization.
Update all references and tests accordingly.

NEW/tests/JdeScoping.DataSync.Tests/ScheduleCheckerTests.cs

@@ -1,7 +1,7 @@
 using JdeScoping.Core.Models;
 using JdeScoping.Core.Models.Enums;
 using JdeScoping.Core.Models.Infrastructure;
-using JdeScoping.DataSync.Configuration;
+using JdeScoping.DataSync.Options;
 using JdeScoping.DataSync.Contracts;
 using JdeScoping.DataSync.Services;
 using Microsoft.Extensions.Logging.Abstractions;
@@ -23,7 +23,7 @@ public class ScheduleCheckerTests
     public ScheduleCheckerTests()
     {
         _repository = Substitute.For<IDataUpdateRepository>();
-        _options = Options.Create(new DataSyncOptions
+        _options = Microsoft.Extensions.Options.Options.Create(new DataSyncOptions
         {
             LookbackMultiplier = 3,
             DataSources = []